5
December 2026
Saturday
Running· Île-de-France Region, France
The Josas Fireflies
Starts in 31 days
Key facts
- Longest distance
- 12 km
Course
View the course on Finishers
View the course on FinishersCourse: www.finishers.com
View the course on Finishers
View the course on FinishersCourse: www.finishers.com
About this event
The Josas Fireflies is a running event in Île-de-France Region, France, held on Saturday, 5 December 2026 — a weekend event in winter. The longest distance is 12 km.
Entry & registration
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Location
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